Calflora, a 501c3 non-profit
Distribution by County   678    
Arnica cernua  Howell
Serpentine arnica
Arnica cernua is a perennial herb (rhizomatous) that is native to California, and also found in Oregon.
California Rare Plant Rank: 4.3 (limited distribution).
Record Count by County

Del Norte: 47 Humboldt: 46 Siskiyou: 24 Trinity: 3

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: 02/07/2023).